Apparatus for the manufacture of mixed gas



Dec. 1, 1931. M. w. TRAVERS l '1,834,810

APPARATUS `FOR THE MANUFACTURE 0F; MIXED GAS Filed July 9, 1928 l/ P M" INVENTOR: MORRIS WILLIAM TRAVERS,

By his Attorneys,

Patented Dec. 1, 1931 lUNIT-ED STATES PATENT GFFICE MORRIS VILLIAM TRAVERS, OF CLIFTON, BRISTOL, ENGLAND, ASSIGNOR TO REGENER- ATIVE COAL GASIFICATION SYSTEM, LIMITED, OF LONDON, ENGLAND y APPARATUS FOR THE MANUFACTURE OF MIXED GAS Application filedV July 9, 1928, vSerial No. 291,336, and in Great Britain November 11, 1927.

VI in a regenerator, whence part of the reheated gas passes into the carbonization section of the generator in order to carbonize the iuel in it, and a part passes into a carburetter into which oil is sprayed for the pur- '10 pose of enriching the gas. The carburetted gas does not return to the regenerator, or to the generator. The regenerator and carburetter are both heated by the gas generated during the air blow period as described, and

" the waste gases from this period pass out through stack valves in the top of the regenerator and carburetter respectively.

According to the present invention, in order to secure the more effective use of the heat in, the air blow gas, the latter instead of passing in parallel through the regenerating and carburetting chambers, passes through these chambers serially, iirst through the regenerator and next through the carburetter and finally through a preheater. Then on the gas making run a proportion of the gas is tapped oit of the discharge main and passed iirst through the preheater. On leaving the prehcater, part of this gas passes through the regenerating chamber to the carboniZation chamber, producing which is dischare'ed into the main. The remainder of the tapped gas leaving the preheater passes through the carbureting chamber where 1t is enriched and then after suitable treatment discharged into the main, preferably at a point beyond that at which the gas is tapped ott.

The accompanying drawings show diagrammatically in elevation by way of example two difl'erent ways of carrying out the ber below the carhonization chamber, into which chamber the carbonized fuel descends. K is a scrubber and L a condenser. R is a valve between the condenser' and the main H. U and V are valves for admitting air and steam respectively beneath the chamber B. O is a cooler and P a valve between the cooler and the main. M is a wash box and G is a gas eXhauster or pump hereinafter referred.

to as a circulator. W is awash-box between the carbonizing chamber A and the scrubber K.

yAll these parts are arranged as in the plant described in my prior patent above referred to, with the exception of the wash-box W,

which, however, 'forms no part of the present invention.

arranged so that it communicates at the bottom with the chamber B'. It also communi- Cates with a carburetter E, but according to the present invention this communication is serial during the air blow period. Also a preheating chamber C is arranged above the chambers D and E. nicates with the top of the regenerator through a pipe F and valve I, and with the bottom of the carburetter through a pipe J and valve Y.

A circulator G draws gas trom the main H as before, and also communicates with the preheating chamber C through a valve Q. The preheating chamber' C has a stack valve S. he pipe J is also open to the wash-boX M. Oi l for enriching the gas is fed to the top oi the carburetter at X.

During the air blow period, the valves I, .R and Q, are closed, and the valve N and the stack valve S opened. The blow gas conse- `quently passes from the chamber B through The chamber C commu- 35 ingwith the main, means for admitting en- Y Aoccurringin the previous figure are indicated by the same letters with double dashes. The carburetor E of lFigurel is here subdivided into a gas enriching chamberrE and al superhe'ater'Y, the remainder of the apparatus being substantially as in'Figure 1. The opl eration Yduring the air blovv and steam run Y periods, Will be understoodfrom the descrip- Itionof Figure 1.

lnfboth arrangements only one stack valve .-S Vor S is required. p

Whatlclaim is: l i, y Y

1. In apparatus for enriching with oil the gas obtained by lthe. complete gasification of coal, kafgasiiicationchamber .adapted to containa uel bed, means'for admitting air and rsteamrespectively.into said chamber, a fuel carbonization chamber Yabove the said gasification V4chamber communicating freely therewith, Va gas main in communication with the said 'oarbonization chamber, a Vregenerating V.chamber in communication with 'the gasification chamber, VVa carbu- `rettor and regenerator and to prevent the flow of gas inthe reverse directions during the air blow period to admit gasl from the outlet of the Carburettor to the preheater during the air blow period and to prevent the flow of circulation gas inthe reverse direction, said means of the preheater being a stack valve, valves for controlling the admission of air and steam to the generator, and valves for controlling of theV recirculation gas vand at both outlets for gas to the gas main.

p ln testimony that I claim the foregoing as myinvention have signed-my name this 26th day of June, 1928. Y Y v MORRIS YVILLIAM TRAVERS.

retting chamber .communicating With the y gasiication chambervand also communicat- .riching oil to the carburetting chamber, a

preheater having vmeans for the escape of Wastey air blow gas/and coimectionsV to the regenerator and the Carburettor andy also to the outlet fromthe Carburettor, means for producing a current of gasvduring thev blovvf Yperiod to pass serially through the regenerating-and carburettingand preheating oham- Y bers and thence to the atmosphere, and means for .recirculating, gas drawn from the main during the steam run period through the preheaterf andcarburettor in parallel currents, Y

.one current being superheated in the pre- Aheater and passedvinto the fuel carboni'zation` chamber, the other current being carburet- Vted in the vCarburettor and passed to the gas 6d .ing of said connections, Y'

main at a point beyond thev point of With- A dravval of recirculation gas from saidV main.

the gas obtained ybythe complete gasification .2. In apparatus for enriching withY oil Voi ycoal :according to claim v,1, wherein said Y t VVVmeans for the escape ofV gas isa stack valve, Y

g ,gasiobtained by the complete gasiication of coal according to'claim 1*, including valve f means whereby said connections may` be op 3. In Vapparatus forenriching vvithgoil the Y 

